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Preliminary Version (preliminary + version)

Distribution by Scientific Domains

Medical Sciences	28%
Business, Economics, Finance and Accounting	28%

Selected Abstracts

Towards a debugging system for sensor networks

INTERNATIONAL JOURNAL OF NETWORK MANAGEMENT, Issue 4 2005
Nithya Ramanathan
Due to their resource constraints and tight physical coupling, sensor networks afford limited visibility into an application's behavior. As a result it is often difficult to debug issues that arise during development and deployment. Existing techniques for fault management focus on fault tolerance or detection; before we can detect anomalous behavior in sensor networks, we need first to identify what simple metrics can be used to infer system health and correct behavior. We propose metrics and events that enable system health inferences, and present a preliminary design of Sympathy, a debugging tool for pre- and post-deployment sensor networks. Sympathy will contain mechanisms for collecting system performance metrics with minimal memory overhead; mechanisms for recognizing application-defined events based on these metrics; and a system for collecting events in their spatiotemporal context. The Sympathy system will help programmers draw correlations between seemingly unrelated, distributed events, and produce graphs that highlight those correlations. As an example, we describe how we used a preliminary version of Sympathy to help debug a complex application, Tiny Diffusion.,Copyright © 2005 John Wiley & Sons, Ltd. [source]

Changes in UK tax-effective giving: implications for donor fundraising strategies

INTERNATIONAL JOURNAL OF NONPROFIT & VOLUNTARY SECTOR MARKETING, Issue 1 2000
Gareth G. Morgan
Strategies for fundraising from committed donors in the UK have long placed considerable emphasis on tax-efficient giving, in particular the use of deeds of covenant and gift aid which enables charities to recover tax paid by the donor and thus increase the value of a donor's gift. However, recent developments and proposed developments in UK legislation and Inland Revenue procedures are about to make radical changes to this regime. Although in general the changes are beneficial to charities, the precise implications will, in many cases, require a significant change in fundraising strategies to make effective use of the new giving environment. This paper seeks to analyse the nature of those changes and the consequence for fundraising strategies. In relation to three main strategies some approaches to further research are proposed, which a charity may wish to apply in order to assess whether and to what extent new approaches to committed donor fundraising are required. A preliminary version of this paper was presented at the Institute of Charity Fundraising Managers Convention (Academic Stream) in July 1999, but it has been substantially changed to take account of further government announcements made in November, 1999. Copyright © 2000 Henry Stewart Publications [source]

The Existential Loneliness Questionnaire: Background, development, and preliminary findings

JOURNAL OF CLINICAL PSYCHOLOGY, Issue 9 2002
Aviva M. Mayers
We described the background and the development of a new measure of existential loneliness, the Existential Loneliness Questionnaire (ELQ). Specifically, we analyzed the items of the preliminary version of the ELQ (ELQ-P) using methods based on item response theory (the Rasch model) and examined the convergent and discriminative validity of the ELQ in a sample of 47 HIV-infected women. Item analysis produced an ELQ version consisting of 22 items that were internally consistent and performed well in measuring an underlying construct conceptualized as existential loneliness. In addition, the ELQ discriminated well between symptomatic and asymptomatic HIV-infected women. The ELQ correlated strongly with measures of depression, loneliness not identified as existential and purpose-in-life and moderately strongly with a measure of hopelessness. Holding constant depression scores, the correlation between the ELQ and loneliness not identified as existential was significantly attenuated. Limitations of the study include the small sample size, which precluded an analysis of the dimensional structure of the ELQ. © 2002 Wiley Periodicals, Inc. J Clin Psychol 58: 1183,1193, 2002. [source]

Regional Cluster Policies: Learning by Comparing?

KYKLOS INTERNATIONAL REVIEW OF SOCIAL SCIENCES, Issue 3 2002
Jan Hospers
This paper deals with an intriguing paradox that can be observed in today's regional economic policy making: whereas unique local factors are increasingly seen as the determinants of regional economic success, simultaneously more and more governments try to copy policy experiences that proved to be successful in a particular region. A good example here is the use of ,best practices' in the field of regional cluster policy. Cluster programs are becoming like ,mantras' for policy makers who want to stimulate regional economic development. Given this paradox, in the present paper we address the question what lessons can be drawn from comparing success stories of regional clustering. To answer this question, we combine insights from regional economics and comparative public policy. To start, we discuss the literature that has led to the popularity of the cluster concept as a learning device among policy makers. After that, we identify the preconditions (,contingencies') that affect whether these cluster policy initiatives can be transferred from one place to another. We find that some of the contingent influences, especially those related to the degree of uniqueness of an area's economic structure and culture, hamper the possibility of ,learning by comparing' in regional cluster policy. It may even be argued that exactly those regional specificities explain the success of cluster,based policy efforts. Thus, we have to draw the rather pessimistic conclusion that the possibilities of lesson,drawing in regional cluster policy are limited. In our view, at best ,best practices' should be seen as inspiration sources rather than as recipes for successful regional economic development. A preliminary version of this paper was presented at the CURE 3,Conference on Outstanding Regions in Leeuwarden, The Netherlands, November 22,24, 2000. We would like to thank Arnoud Lagendijk, an anonymous referee and the editors for valuable comments. [source]

How to multiply a matrix of normal equations by an arbitrary vector using FFT

ACTA CRYSTALLOGRAPHICA SECTION A, Issue 6 2008
Boris V. Strokopytov
This paper describes a novel algorithm for multiplying a matrix of normal equations by an arbitrary real vector using the fast Fourier transform technique. The algorithm allows full-matrix least-squares refinement of macromolecular structures without explicit calculation of the normal matrix. The resulting equations have been implemented in a new computer program, FMLSQ. A preliminary version of the program has been tested on several protein structures. The consequences for crystallographic refinement of macromolecules are discussed in detail. [source]

The Cancer Pain Inventory: preliminary development and validation

PSYCHO-ONCOLOGY, Issue 7 2010
Teresa L. Deshields
Abstract Objective: The purpose of this study was to develop a Cancer Pain Inventory (CPI) that measures cancer patients' beliefs and concerns about pain. This paper describes development and pilot testing of a preliminary version of the CPI and describes its psychometric properties including its reliability and validity relative to established pain measures. Methods: Subjects were recruited from inpatient and outpatient oncology services of an NCI-designated comprehensive cancer center. Participants completed the 50 potential CPI items and these standard measures,Orientation-Memory-Concentration Test, Survey of Pain Attitudes, Brief Pain Inventory, Pain Disability Index, and Center for Epidemiological Studies,Depression Scale. The magnitude and significance of associations between the CPI and the other measures were examined. Results: Of 366 patients who were eligible and agreed to participate in the study, 262 completed the questionnaires. Principal components analyses were used to select items most appropriate for retention in the preliminary version of the CPI and to describe its factor structure. Based on the content of items that loaded on each factor, the five factors were labeled as Catastrophizing, Interference with Functioning, Stoicism, Social Aspects, and Concerns about Pain Medication. Correlations between the CPI and other measures supported construct validity of the five CPI factors. Conclusions: The results supported the validity of the CPI as a measure of five constructs relevant to the experience of pain in the cancer setting. The results also underscored the presence of unique features of cancer-related pain that clearly differ from commonly recognized dimensions of chronic, non-cancer-related pain. Copyright © 2009 John Wiley & Sons, Ltd. [source]

ORIGINAL RESEARCH,WOMEN's SEXUAL DYSFUNCTIONS: The Sexual Interest and Desire Inventory,Female (SIDI-F): Item Response Analyses of Data from Women Diagnosed with Hypoactive Sexual Desire Disorder

THE JOURNAL OF SEXUAL MEDICINE, Issue 6 2005
Terrence Sills PhD
ABSTRACT Introduction Hypoactive sexual desire disorder (HSDD) is the most common sexual complaint in women. Currently there are no validated instruments for specifically assessing HSDD severity, or change in HSDD severity in response to treatment, in premenopausal women. The Sexual Interest and Desire Inventory,Female (SIDI-F) is a clinician-administered instrument that was developed to measure severity and change in response to treatment of HSDD. Seventeen items were included in a preliminary version of the SIDI-F, including 10 items related to desire, and seven items related to possible comorbid factors (e.g., other kinds of sexual dysfunction, general relationship satisfaction, mood, and fatigue). Aim The aim of the study was to use the outcome of item response analyses of blinded data from two randomized, placebo-controlled trials, to assist in the revision of the scale. Methods A nonparametric item response (IRT) model was used to assess the relation between item functioning and HSDD severity on this preliminary version of the SIDI-F. Results Results show that the majority of SIDI-F items demonstrated good sensitivity to differences in overall HSDD severity. That is, there was an orderly relation between differences in option selection for an item and differences in overall HSDD severity. The IRT analyses further indicated that revisions were warranted for a number of these items. Five items were not sensitive to differences in HSDD severity and were removed from the scale. Conclusion The SIDI-F is a brief, clinician-administered rating scale designed to assess severity of HSDD symptoms in women. IRT analyses show that majority of the items of the SIDI-F function well in discriminating individual differences in HSDD severity. A revised 13-item version of the SIDI-F is currently undergoing further validation. Sills T, Wunderlich G, Pyke R, Segraves RT, Leiblum S, Clayton A, Cotton D, and Evans K. The Sexual Interest and Desire Inventory,Female (SIDI-F): item response analyses of data from women diagnosed with hypoactive sexual desire disorder. J Sex Med 2005;2:801,818. [source]